Adjustable piston-rod and cross-head connection.



No. 815,312.. r PATEN'TED MAR. 13, 190

- 0. G. SPRADO. ADJUSTABLE PISTON ROD \AND (moss HEAD CONNECTION APPLICATION FILED SBPT.14.-. 1905.

lahz;

ATTORNEY.

* UNITED s'rA'rns e rnNr cl rion.-

CARL G. SPRADO, OF MILWAUKEE, WISCONSIN, ASSIGNOR TO ALLIS- CHALMERS COMPANY, OF MILWAUKEE, WISCONSIN, A CORPORA- TIONOF NEW JERSEY. 1

ADJUSTABLE'PISTON-ROD AND QROSS-HEADCONNECTION.

, Specification of Letters Patent.

Patented March 13, 1906.

Application filed September 14. 1905. Serial No. 278,395.

To all whom it may concern):

Be it known that I, CARL G. SPRADO, a'citizen of the United States, residing at Milwaukee, in the county of Milwaukee and State of Wisconsin, have invented certain new and useful Improvements in Adjustable Piston- Rod and Cross-Head Connections, of which the following is a specification.

, This invention relates to certain improve-, .ments in adjustable piston-rod and crosshead connections, and is specially adapted to those forms of rod which are not rotatable. It is peculiarly valuable in those structures which have a piston of different shape at top and bottom and in a water-cooled piston, in the latter of which it is desirable to keep the outlet on top. To accomplish this adjust- I ent when this device the piston-rod 1.

ment, I have devised a compact structure,- herewith disclosed, which may be operated without necessity of taking any of the machine apart. Further advantages are apparis used with the incased cross-head.

Figure 1- is a vertical section through a cross-head in which my adjusting device is shown. Fig. 2 is a side elevation thereof.

In the drawings the rod is shown as a piston-rod 1 and is connected to the cross-head 2 by my improved adjusting device. The adjusting device comprises the threaded .element or inner nut 3, whichis mounted upon A keyway 11 in the pistonrod is engaged by the pin 21 through the cross-head hub, which prevents relative rotation of the rod and cross-head. The pin 21 for the nut 3 through the pin 41 or any similar engaging means, also serves as a washer for the lock-nut 5.

What I claim as my invention, and desire to secure 'by Letters Patent, 'is

1. A rod, a member connected thereto and an adjusting device between said rod and member comprising an element engaging said rod, locking means and an actuator for said element. j

2. A rod, a member connected thereto and an adjusting device between said rod and member comprising a threaded element mounted on said rod, locking means and an actuator for said element.

3. A rod, a member connected thereto and a positive-adjusting device between said rod and member comprising an element engaging said rod, means to control said element, and a second element to lock said means.

- 4. A non-rotatable rod, a member reciprocated thereby and an adjusting device between said rod and member comprising an element engaging said rod, and means to control said element.

' 5. .A non-rotatable rod, a member reciprocated thereby and an adjusting device between said rod and member comprising an element engaging said rod, means to control said element, and a second element to lock said means.

6. A rod, a member connected thereto, a pin to hold said rod from rotation and a positive. adjusting device between said rod and member comprising is held in position by the set-screw 22. The pin 21 alsoserves as an-abutment forthe inner nut 3, thereby providing for positive ad-. justrnent when the nut 3 is rotated. The adjusting collar or washer 4 has pin 41 engaging way 31 in the nut 3, whereby the rotation of washer 4 by. a wrench or spanner will serve to control the movement of the-inner nut 3. When the adjustment has been completed, the lock-nut 5 is rotated to hold the collar4.

Itv will be obvious that any means other than 21 may be used to prevent rotation of the piston-rod.

said rod, and means to control said element. 7. A rod, a member'connected thereto, a pin to hold said rod from rotation and a posi tive adjusting device between said rod and member comprising a threaded element mounted on the rod and abutting said pin, means tocontrol said element, and a second element to lock said means.

In testimony whereof I affix in presence of two witnesses.

. CARL G. SPRADO. Witnesses:

JOHN DAY, Jr.,

The collar 4, while serving as an actuator G. F. DE WErN.

an element engaging,

my signature 

